Why is Jimmie Johnson in the Daytona 500? NASCAR legend returns after two-year retirement

Jimmie Johnson is making his return to NASCAR for this weekend's Daytona 500.

source https://www.sportingnews.com/us/nascar/news/jimmie-johnson-daytona-500-nascar-legend-retirement/xvtwfecy2kfnqvvhpxuync89